print('hello')
print(1+2-3)
print(1+2*3)
print(1+2/3)
print((67.5+89+12.9+32.2)/4)

avg = (67.5+89+12.9+32.2)/4
total = (67.5-avg)**2+(89-avg)**2+(12.9-avg)**2+(32.2-avg)**2
print(total/3)

